Alcohols, Phenols, Ethers

Interactive Feed

JEE Advanced 2014

LEVELJEE Advanced

The acidic hydrolysis of ether (X) shown below is fastest when

(A)

one phenyl group is replaced by a methyl group

(B)

one phenyl group is replaced by a para-methoxyphenyl group

(C)

two phenyl groups are replaced by two para-methoxyphenyl group

(D)

no structural change is made to X

JEE Advanced 2020

LEVELJEE Main

An organic compound ( $C_{8} H_{10} O_{2}$ ) rotates plane-polarized light. It produces pink color with neutral $FeCl_{3}$ solution. What is the total number of all the possible isomers for this compound?

JEE Advanced 2014

LEVELJEE Advanced

The reactivity of compound Z with different halogens under appropriate conditions is given below- The observed pattern of electrophilic substitution can be explained by -

* Multiple Correct Options

(A)

The steric effect of the halogen

(B)

The steric effect of the tert-butyl group

(C)

The elctronic effect of the phenolic group

(D)

The electronic effect of the turt-butyl group

JEE Advanced 2022

LEVELJEE Main

The weight percentage of hydrogen in $Q$ , formed in the following reaction sequence, is ______. [Given : Atomic mass of $H = 1$ , $C = 12$ , $N = 14$ , $O = 16$ , $S = 32$ , $Cl = 35$ ]

JEE Advanced 2019

LEVELJEE Advanced

Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula $C_{4} H_{8} O$ is ______.

JEE Advanced 2016

LEVELJEE Advanced

The correct statements(s) about of the following reaction sequence is(are)

* Multiple Correct Options

(A)

R is steam volatile

(B)

Q gives dark violet coloration with 1% aqueous FeCl3 solution

(C)

S gives yellow precipitate with 2, 4,-dinitrophenylhydrazine

(D)

S gives dark violet coloration with 1% aqueous FeCl3 solution

JEE Advanced 2021

LEVELJEE Main

Among the following, the conformation that corresponds to the most stable conformation of meso–butane–2,3–diol is –

The number of hydroxyl group(s) in Q is

JEE Advanced 2022

LEVELJEE Advanced

If the reaction sequence given below is carried out with 15 moles of acetylene, the amount of the product D formed (in g) is ______. The yields of A, B, C and D are given in parentheses. [Given : Atomic mass of H = 1, C = 12, O = 16, Cl = 35]

JEE Advanced 2014

LEVELJEE Main

For the identification of $β$ -naphthol using dye test, it is necessary to use

(A)

dichloromethane solution of

β

-naphthol

(B)

acidic solution of

β

-naphthol

(C)

neutral solution of

β

-naphthol

(D)

alkaline solution of

β

-naphthol

JEE Advanced 2018

LEVELJEE Advanced

LIST-I contains reactions and LIST-II contains major products. Match each reaction in LIST-I with one or more product in LIST-II and choose the correct option.

Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. $H_{2} SO_{4}$ followed by treatment with NaOH?

In the following sequence of reactions, $C H_{3} C H_{2} O H P + I_{2} A M g ether B H C H O C H_{2} O D$ the compound 'D' is

The major product of the following reaction is

The major product of the following reaction is Conc. $HNO_{3}$ + conc. $H_{2} SO_{4} ⟶$

Compound(s) which will liberate carbon dioxide with sodium bicarbonate solution is/are

Main products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are

Consider the following reaction, $C_{2} H_{5} OH + H_{2} SO_{4} ⟶ Product$ Among the following, which one cannot be formed as a product under any conditions?

(A)

Ethyl hydrogen sulphate

During dehydration of alcohols to alkenes by heating with concentrated $H_{2} SO_{4}$ the initiation step is

(A)

protonation of alcohol molecule

(B)

formation of carbocation

(C)

elimination of water

(D)

formation of an ester

JEE Main 2021

LEVELJEE Main

The given reaction can occur in the presence of (A) bromine water (B) $Br_{2}$ in $CS_{2}$ , $273 K$ (C) $Br_{2} / FeBr_{3}$ (D) $Br_{2}$ in $CHCl_{3}$ , $273 K$ Choose the correct answer from the options given below

(B), (C) and (D) only

(D)

(A), (B) and (D) only

JEE Main 2021

LEVELJEE Advanced

In the given reaction, 3-bromo-2, 2-dimethyl butane $C_{2} H_{5} O H$ (A) Major product. Product A is

(A)

2-ethoxy-3, 3-dimethyl butane

(B)

1-ethoxy-3, 3-dimethyl butane

(C)

2-ethoxy-2, 3-dimethyl butane

(D)

2-hydroxy-3, 3-dimethyl butane

JEE Main 2019

LEVELJEE Main

$C H_{3} C H_{2} - P h C O H - C H_{3}$ cannot be prepared by

(A)

C H_{3} C H_{2} C O C H_{3} + P h M g X

(B)

P h C O C H_{3} + C H_{3} C H_{2} M g X

(C)

P h C O C H_{2} C H_{3} + C H_{3} M g X

(D)

H C H O + P h C H (C H_{3}) C H_{2} M g X

JEE Main 2019

LEVELJEE Main

The major product of the following reaction is

Arrange the following compounds in increasing order of $C - O H$ bond length : methanol, phenol, p-ethoxyphenol

(A)

phenol < methanol < p-ethoxyphenol

(B)

phenol < p-ethoxyphenol < methanol

(C)

methanol < p-ethoxyphenol < phenol

(D)

methanol < phenol < p-ethoxyphenol

The acidic hydrolysis of ether (X) shown below is fastest when

The reactivity of compound Z with different halogens under appropriate conditions is given below- The observed pattern of electrophilic substitution can be explained by -

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } The weight percentage of hydrogen in Q, formed in the following reaction sequence, is ______. [Given : Atomic mass of H=1, C=12, N=14, O=16, S=32, Cl=35]

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula C4​H8​O is ______.

The correct statements(s) about of the following reaction sequence is(are)

Among the following, the conformation that corresponds to the most stable conformation of meso–butane–2,3–diol is –

The number of hydroxyl group(s) in Q is

If the reaction sequence given below is carried out with 15 moles of acetylene, the amount of the product D formed (in g) is ______. The yields of A, B, C and D are given in parentheses. [Given : Atomic mass of H = 1, C = 12, O = 16, Cl = 35]

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } For the identification of β-naphthol using dye test, it is necessary to use

LIST-I contains reactions and LIST-II contains major products. Match each reaction in LIST-I with one or more product in LIST-II and choose the correct option.

List-I

List-II

The major product in the following reaction is

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. H2​SO4​ followed by treatment with NaOH?

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } In the following sequence of reactions, CH3​CH2​OHP+I2​​AMgether​BHCHO​CH2​O​D the compound 'D' is

The major product of the following reaction is

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } The major product of the following reaction is Conc. HNO3​ + conc. H2​SO4​⟶

Compound(s) which will liberate carbon dioxide with sodium bicarbonate solution is/are

Main products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Consider the following reaction, C2​H5​OH+H2​SO4​⟶Product Among the following, which one cannot be formed as a product under any conditions?

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } During dehydration of alcohols to alkenes by heating with concentrated H2​SO4​ the initiation step is

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } In the given reaction, 3-bromo-2, 2-dimethyl butane C2​H5​OH​ (A) Major product. Product A is

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } CH3​CH2​−PhCOH​−CH3​ cannot be prepared by

The major product of the following reaction is

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Arrange the following compounds in increasing order of C−OH bond length : methanol, phenol, p-ethoxyphenol

The weight percentage of hydrogen in $Q$ , formed in the following reaction sequence, is ______. [Given : Atomic mass of $H = 1$ , $C = 12$ , $N = 14$ , $O = 16$ , $S = 32$ , $Cl = 35$ ]

Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula $C_{4} H_{8} O$ is ______.

For the identification of $β$ -naphthol using dye test, it is necessary to use

Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. $H_{2} SO_{4}$ followed by treatment with NaOH?

In the following sequence of reactions, $C H_{3} C H_{2} O H P + I_{2} A M g ether B H C H O C H_{2} O D$ the compound 'D' is

The major product of the following reaction is Conc. $HNO_{3}$ + conc. $H_{2} SO_{4} ⟶$

Consider the following reaction, $C_{2} H_{5} OH + H_{2} SO_{4} ⟶ Product$ Among the following, which one cannot be formed as a product under any conditions?

During dehydration of alcohols to alkenes by heating with concentrated $H_{2} SO_{4}$ the initiation step is

In the given reaction, 3-bromo-2, 2-dimethyl butane $C_{2} H_{5} O H$ (A) Major product. Product A is

$C H_{3} C H_{2} - P h C O H - C H_{3}$ cannot be prepared by

Arrange the following compounds in increasing order of $C - O H$ bond length : methanol, phenol, p-ethoxyphenol